Geotechnical Investigations for a Proposed Development of Hostels in Moi University, Eldoret – 2019
Introduction
In 2019, a geotechnical investigation was conducted for the proposed development of hostels at Moi University in Eldoret. The objective of this study was to evaluate the subsurface conditions and provide geotechnical data to guide foundation design and construction. The investigation included borehole drilling, Standard Penetration Tests (SPTs), groundwater level assessments, and laboratory testing of soil and rock samples.
Site Investigation and Methodology
A series of boreholes were drilled to extract soil and rock samples, helping in the identification of the geological formations underlying the site. Standard Penetration Tests (SPTs) were performed at various depths to determine soil strength, compaction levels, and bearing capacity. Groundwater level measurements were taken to assess potential challenges related to water ingress and dewatering needs.
Laboratory tests were conducted on collected samples to determine key soil properties such as moisture content, Atterberg limits, grain size distribution, shear strength, and compressive strength of rock materials. These tests played a crucial role in defining the engineering properties of the subsurface materials and guiding appropriate foundation solutions.
Findings and Recommendations
The investigation revealed the presence of clayey and silty soils overlying weathered rock, which influenced the selection of a suitable foundation system. The SPT results indicated variable soil strengths, with some areas requiring soil improvement techniques. The groundwater table was encountered at moderate depths, necessitating proper drainage considerations during construction.
Based on the findings, it was recommended that either reinforced raft foundations or deep pile foundations be used, depending on the structural load requirements. For areas with weak soils, soil stabilization techniques such as compaction or cement stabilization were suggested to enhance bearing capacity and reduce settlement risks.
Conclusion
The geotechnical investigation for the proposed hostel development at Moi University provided essential data for foundation design and construction planning. Through borehole drilling, SPTs, groundwater analysis, and laboratory testing, the study ensured the structural integrity and long-term stability of the project. Conducting detailed geotechnical assessments remains a fundamental step in achieving safe and resilient construction in Eldoret’s dynamic geological setting.
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